Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3089571
Keywords
bismuth compounds; dielectric polarisation; dysprosium alloys; ferroelasticity; ferroelectric switching; ferroelectric thin films; iron alloys; magnetic field effects; magnetic multilayers; magnetoelectric effects; multiferroics; terbium alloys
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Funding
- National Natural Science Foundation of China [50672034, 50832002]
- National Key Basic Research Program of China [2009CB929501, 2009CB623303, 2006CB921804]
- Research Grants Council (RGC) of Hong Kong, China [B-Q10T]
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A profound interplay between ferroelastic strain, polarization, and external magnetic field was observed in both bilayer and trilayer laminate Tb0.27-0.30Dy0.73-0.70Fe1.90-1.95 (Terfenol-D)/Bi12GeO20. The bilayer shows a much higher shear strain induced magnetoelectric effect than the trilayer. A series of experimental results related to the ferroelasticity in Bi12GeO20 such as a butterfly loop of the surface strain of Bi12GeO20 to magnetic field and a reproducible magnetic-field-induced strain switching were observed for the bilayer laminate.
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